/*
 * Copyright � 2002-2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Reflection;
using Microsoft.Extensions.Logging;
using NUnit.Framework;
using Spring.Aop.Support;
using Spring.Context.Support;
using Spring.Objects;
using Spring.Objects.Factory;
using Spring.Objects.Factory.Xml;

namespace Spring.Aop.Framework.AutoProxy;

/// <summary>
/// Tests for auto proxy creation combined with factory object and circular references.
/// </summary>
/// <author>Erich Eichinger (.NET)</author>
[TestFixture]
public class AdvisorAutoProxyCreatorCircularReferencesTests
{
    [Test]
    public void TestAutoProxyCreation()
    {
        XmlApplicationContext context = new XmlApplicationContext(ReadOnlyXmlTestResource.GetFilePath("advisorAutoProxyCreatorCircularReferencesTests.xml", typeof(AdvisorAutoProxyCreatorCircularReferencesTests)));
        CountingAfterReturningAdvisor countingAdvisor = (CountingAfterReturningAdvisor) context.GetObject("testAdvisor");

        // direct deps of AutoProxyCreator are not eligable for proxying
        Assert.IsFalse(AopUtils.IsAopProxy(context.GetObject("aapc")));
        Assert.IsFalse(AopUtils.IsAopProxy(countingAdvisor));

        TestObjectFactoryObject testObjectFactory = (TestObjectFactoryObject) context.GetObject("&testObjectFactory");
        Assert.IsFalse(AopUtils.IsAopProxy(testObjectFactory));

        Assert.IsFalse(AopUtils.IsAopProxy(context.GetObject("someOtherObject")));

        // this one is completely independent
        Assert.IsTrue(AopUtils.IsAopProxy(context.GetObject("independentObject")));

        // Asserts SPRNET-1225 - advisor dependencies most not be auto-proxied
        object testObject = context.GetObject("testObjectFactory");
        Assert.IsFalse(AopUtils.IsAopProxy(testObject));

        // Asserts SPRNET-1224 - factory product most be cached
        context.GetObject("testObjectFactory");
        testObjectFactory.GetObjectCounter = 0;
        context.GetObject("testObjectFactory");
        Assert.AreEqual(0, testObjectFactory.GetObjectCounter);

        ICloneable someOtherObject = (ICloneable) context.GetObject("someOtherObject");
        someOtherObject.Clone();
        ICloneable independentObject = (ICloneable) context.GetObject("independentObject");
        independentObject.Clone();
        Assert.AreEqual(1, countingAdvisor.GetCalls());
    }
}

public class TestDefaultAdvisorAutoProxyCreator : DefaultAdvisorAutoProxyCreator, IInitializingObject
{
    private readonly ILog _logger;

    public TestDefaultAdvisorAutoProxyCreator()
    {
        _logger = LogManager.GetLogger(this.GetType().Name + "#" + GetHashCode());
        _logger.LogTrace("Created instance");
    }

    protected override IList<object> GetAdvicesAndAdvisorsForObject(Type targetType, string targetName, ITargetSource customTargetSource)
    {
        _logger.LogTrace("GetAdvicesAndAdvisorsForObject begin");
        IList<object> advices = base.GetAdvicesAndAdvisorsForObject(targetType, targetName, customTargetSource);
        _logger.LogTrace("GetAdvicesAndAdvisorsForObject end");
        return advices;
    }

    public override void AfterPropertiesSet()
    {
        _logger.LogTrace("AfterPropertiesSet");
        base.AfterPropertiesSet();
    }
}

public class CountingAfterReturningAdvisor : StaticMethodMatcherPointcutAdvisor
{
    private ITestObject testObject;

    public ITestObject TestObject
    {
        get { return this.testObject; }
        set { this.testObject = value; }
    }

    public int GetCalls()
    {
        return ((CountingAfterReturningAdvice) base.Advice).GetCalls();
    }

    public CountingAfterReturningAdvisor()
    {
        LogManager.GetLogger(this.GetType()).LogTrace("Created instance #" + this.GetHashCode());
        base.Advice = new CountingAfterReturningAdvice();
    }

    public override bool Matches(MethodInfo method, Type targetType)
    {
        return true;
    }
}

public class SomeOtherObject : ICloneable
{
    public SomeOtherObject()
    {
        LogManager.GetLogger(this.GetType()).LogTrace("Created instance #" + this.GetHashCode());
    }

    public object Clone()
    {
        return this;
    }
}

public class IndependentObject : ICloneable
{
    public IndependentObject()
    {
        LogManager.GetLogger(this.GetType()).LogTrace("Created instance #" + this.GetHashCode());
    }

    public object Clone()
    {
        return this;
    }
}

public class TestObjectFactoryObject : IFactoryObject, IInitializingObject
{
    private bool initialized = false;
    private ITestObject testObject;
    private SomeOtherObject someOtherObject;
    private readonly ILog _logger;

    public int GetObjectCounter = 0;

    public TestObjectFactoryObject()
    {
        _logger = LogManager.GetLogger(this.GetType().Name + "#" + this.GetHashCode());
        _logger.LogTrace("Created instance");
    }

    public SomeOtherObject SomeOtherObject
    {
        get { return this.someOtherObject; }
        set { this.someOtherObject = value; }
    }

    public object GetObject()
    {
        GetObjectCounter++;
        // return product only, if factory has been fully initialized!
        if (!initialized)
        {
            _logger.LogTrace("GetObject(): not initialized, returning null");
            return null;
        }

        _logger.LogTrace("GetObject(): initialized, returning testObject");
        return testObject;
    }

    public Type ObjectType
    {
        get
        {
            // return type only if we are ready to deliver our product!
            if (!initialized)
            {
                _logger.LogTrace("get_ObjectType(): not initialized, returning null");
                return null;
            }

            _logger.LogTrace("get_ObjectType(): initialized, returning typeof(ITestObject)");
            return typeof(ITestObject);
        }
    }

    public bool IsSingleton
    {
        get { return true; }
    }

    public void AfterPropertiesSet()
    {
        _logger.LogTrace("AfterPropertiesSet");
        Assert.IsNotNull(someOtherObject);
        testObject = new TestObject();
        initialized = true;
    }
}